/*
 * WorldEdit, a Minecraft world manipulation toolkit
 * Copyright (C) sk89q <http://www.sk89q.com>
 * Copyright (C) WorldEdit team and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.sk89q.worldedit.extension.platform;

import com.sk89q.worldedit.WorldEdit;
import com.sk89q.worldedit.internal.block.BlockStateIdAccess;
import com.sk89q.worldedit.world.block.BlockState;
import com.sk89q.worldedit.world.block.BlockType;
import com.sk89q.worldedit.world.registry.BlockRegistry;

/**
 * A collection of capabilities that a {@link Platform} may support.
 */
public enum Capability {

    /**
     * The capability of registering game hooks to catch events such as
     * a player clicking a block.
     */
    GAME_HOOKS {
        @Override
        void initialize(PlatformManager platformManager, Platform platform) {
            platform.setGameHooksEnabled(true);
        }

        @Override
        void uninitialize(PlatformManager platformManager, Platform platform) {
            platform.setGameHooksEnabled(false);
        }
    },

    /**
     * The capability of providing configuration.
     */
    CONFIGURATION {
        @Override
        void initialize(PlatformManager platformManager, Platform platform) {
            WorldEdit.getInstance().getAssetLoaders().init();
        }

        @Override
        void uninitialize(PlatformManager platformManager, Platform platform) {
            WorldEdit.getInstance().getAssetLoaders().uninit();
        }
    },

    /**
     * The capability of handling user commands entered in chat or console.
     */
    USER_COMMANDS {
        @Override
        void initialize(PlatformManager platformManager, Platform platform) {
            platformManager.getPlatformCommandManager().registerCommandsWith(platform);
        }

        @Override
        void uninitialize(PlatformManager platformManager, Platform platform) {
            platformManager.getPlatformCommandManager().removeCommands();
        }
    },

    /**
     * The capability of a platform to assess whether a given
     * {@link Actor} has sufficient authorization to perform a task.
     */
    PERMISSIONS,

    /**
     * The capability of a platform to dispatch WorldEditCUI events.
     */
    WORLDEDIT_CUI,

    /**
     * The capability of a platform to perform modifications to a world.
     */
    WORLD_EDITING {
        @Override
        void ready(PlatformManager platformManager, Platform platform) {
            BlockRegistry blockRegistry = platform.getRegistries().getBlockRegistry();
            for (BlockType type : BlockType.REGISTRY) {
                for (BlockState state : type.getAllStates()) {
                    BlockStateIdAccess.register(state,
                        blockRegistry.getInternalBlockStateId(state)
                            .orElse(BlockStateIdAccess.invalidId()));
                }
            }
        }

        @Override
        void unready(PlatformManager platformManager, Platform platform) {
            BlockStateIdAccess.clear();
        }
    };

    /**
     * Initialize platform-wide state.
     */
    void initialize(PlatformManager platformManager, Platform platform) {
    }

    /**
     * Un-initialize platform-wide state.
     */
    void uninitialize(PlatformManager platformManager, Platform platform) {
    }

    /**
     * Initialize per-level state.
     */
    void ready(PlatformManager platformManager, Platform platform) {
    }

    /**
     * Un-initialize per-level state.
     */
    void unready(PlatformManager platformManager, Platform platform) {
    }

}
